.nav {
  position: fixed;
  z-index: 99;
  bottom: 0;
  left: 0;
  right: 0;
}

.div-5-pace {
  padding: 5px;
  // display: flex;
  // flex-wrap: wrap;
  // justify-content: space-around;
  button {
    margin: 5px;
  }
}